Vehicle-wheel-rim structure



J. RQ @An/IMMER. VEHICLE WHEEL RIIVI STRUCTURE.

vAPPLICATION F|LED1uNE\14,192o. i

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. ,riemen e uipment.v

'JOHN geranium-"En, or axnononro, A'ssIGNonTo THEB. r.' eoon'nicn CQMPANY, 1 ornnw YORK, n. Y., CORPORATION or NEWJYonx.

'vEHIGLE-WHEnL-RIM sTRUcrUnE. v

Application filed June 14,

Toallwlwm imag concern: f

B e itlmovvn that I. JOHN R. GAMMETER, a cltizenwof the 'United States, residing at Akron, in the countygof Summit. and State of- Ohio, have invented '1a certain new and p useful' .Vehicle-Wheel-Rim Structure, off- .vvluchthe following isa specification.

,'lhisinvention relates to structures for carrying a pluralityof tires side by side on the same -vvheel insuch manner that the tires may -be demounted -or -detached, a `@nunon example beingv thej so-called dual tire nA such equipment, especiallyfor pneumatic tires, it is .desirable vthat therinner tire off l.' the pair, next the-vehicle body, or said tire and its rim when demountablelrims nare employed, shall'be readily accessible-and 'easily removable, butv in these 'equipments as heretofo're used it. .has been necessary -to take oft` the outer tire, or tire and rim, beforeremoving the inner one, andv also to remove oneor more slidablerings frombetween or under 'the tires'or rims, which rings often come oli with great difficulty.. My principal obj ect is to overcome these objections.4 1

Of the accompanying d Fig.v 1 is across-section, taken on theline 1-1 of F1`g. 2, of a Wheel having a dual tiremounting constructed according to. myinvention. y v y Fig.'2 is a partial side vievvv of the same. Fig. 3 is a sectionvon line 3-3 of Fig. 2. Fig. 4 is a section on line 4 4 of Fig.` 1.

' Fig. 5 is a-.section on line 545101? Fig. 1. In the dravvings, 10vis aipermanent rim,

provided With'external circumferential, ra-

dial truste-conical', rrim-seating' flanges 1'1`V and 12, the outer one, 12, of which is radially shorter than the inner flange 11. 13is a demount-able, annular supporting baseor member constituting an intermediate rim, split transversely as shown at 14 in Fig. v2, and having internal, circumferential, radial inner and outerflanges 15 and 16 Whose peripheral surfaces are formed as frustums of female 'coneslyvith their small ends adjacent,

' the inner flange 15 seatingupon the lixed rim liange 11, While the outer one 1G seats upon a transversely-split Wedging ring 17 which in turn seats upon' the outer fixed rim flange 12 and is secured in place by clamps 18 land bolts 19. -1

The intermediate rim 13 has mounted therel awings,-showingay preferred embodiment; 1-

192e. vserial No. 358,748.

' on twol individual tire-carrying rims, 20and 21, which may be of any suitable` construction, with pneumatic tires 41, 42 thereon. As

shown, the rim 13 is provided externally With .two pairs of integral circumferential flanges,

22, V23v and 24, 25,y peripherally formed with' reverse frustums of male cones having their smaller ends adJacent, 'and the inner peripheries of thetire-rims, 20, 21 are-formed with two pairs of complemental frusto-conical flanges 28, 29 and 30, 31 seating upon the flanges 22, 23 and 24, 25. The rims 20, 21

arev vshown as provided with removable beadretai'ningrings 26, 26 and transversely-split locking rings 27,27 for .said bead-retaining rings; Y y v 32, 32 are the tire-intlating valves or stems. To permit the mountingof the tires, thev intermediate rim.13 is formed with slots or recesses :33 vextending laterally in from each edge, and the permanent rim 10 is formed with a, slot 33a extending clear across it. I prefer to connect the two valve stems with a. ,trunk pipe 34, as shown, whose end fittings are attached to the stems bymeans of couplings 35, and provide -at each branch or valve stem a stop-valve 3G, thus permitting the inflation of thetires singly or both at once. Each tire-carrying rim 20, 21 has a driving lug 37 on its inner periphery, lodged between a pair of complemental driving .lugs

A38 on'the outer;l periphery of the intermediate'rim, and similarly,V the intermediate ,rim has on its innerperiphery a driving lug 39 occupying theslotBBa formed between a. pair otcomplemental driving lugs 40 on the permlane'nt rim 10, to prevent circumferential .movement of the several -rims on their immediate supportsi e in applying dual tires to thewheel, the tires 'are iirst, mounted individually upon their respective tire-carrying rims 20, 21, and secured thereon by the bead rings 26, 26 and locking rings 27, 27. These rims with their tires are then placed in position, from opposite sides, upon the intermediate rim 13, which is contracted to receive them, and which when expanded outwardly against the tire rims, will interlock therewith through the ranges 22, es, es, 29 and 24,25, 301,31. The, valve stems 32 are then connected by the pipe 34, and the-tivo tires preferably inflated si- `multaneonsly to approximately the saine lpressure While off the wheel, the. -two stop valves 36 being left open for this purpose I and the pressure being rretaine'-d-by the usual Cheek-valve or linsides inthe stems 32. The intermediate rim 13;- earrying the ldual tires An theirii'espective iims ,.is then placed in position on the Wheelan'd seeurerl there-)1 y on by lmeansv of the Wedging ring 1T', under1`1 the action of the clamps 18 andboltsll)N The Wedging action of the ring 17 not only'securesthe intermediate rim 13 upon the Wheel, -but also expands `it firmly againstthe tireearrying .rims 20 vrand 2l. `The tires are removed from the Wheel by the reverse operation. The-heads of thestop-valves 36 may clear the bottom of the channel of the fixed rim 10 when said' valves are sere'wedfully liome,`- or if not'arranged to Clear it, they may be removed before applyingor lremovin the'rim 13` 'f f r MyA inventionpermits' not only the handlingofthe Vtivo tires as al unit, but theres movalof tlie.-iniier tire or rimmfitliout detransversely-split annular member adapted internally to be seatedon a permanent rim and adapted externally to `carry a plurality of'tire-earrying rims'.

l2.111 a rim structure for dual tires, a de- A mountable, transversely-split ai'iniilar meniber adapted internally to be seated on a peimanent rim and adapted externally toreceive frombpposite sides and seat twotirecarry iingrims. v

3:. In a tire mounting, the eombination'ot` -a'- .transverselysplit demountablel annular .member internally 'adapted to be sea-ted on a permanent, rim and adapted'- externally to carry a plurality of tires,a permanent rim adapted to seat said annular member, and means for retaining lsaid member on the per-' manent rim,v said l meansl acting to expand;

Isaid member outwardlyv 4.1 In a rimstructuie for. dual tires, the

eombinationof ademountahle, 'transverselysplit, intermediate rim adapted internally `to be seated on` a permanent rim, demountable tire-`carryin`g-rims adapted to be placed on' v said intermediate rim from opposite .sides thereof, radially interlocking membersv ont-he adjacent faces of said intermediate rim.- and rim, and Wedging means demountably'se'eurs ing the intermediate rim upon the permanent rim and serving to expand the former.'

outwardly into interlocked enga-gement Wit-h the tire-Carrying rims.

In Witness whereof I hand this 9th day of June, 1920.

l' JoiiN'R. GAMMETER.

have hereunto set my -said tire-carrying rims, a Wheel Ahaving a permanent rim supporting vsaid intermediate" 

